Wu Wen-Jia, Xu Chun-Ling, Wang Dong-Wei, Xie Hui
Lab of Plant Nematology/Research Center of Nematodes of Plant Quarantine, Department of Plant Pathology/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510160, China.
Zootaxa. 2018 Dec 3;4526(4):576-588. doi: 10.11646/zootaxa.4526.4.9.
A new species, Eudorylaimus piceae n. sp., extracted from rhizosphere soil of Picea crassifolia from Inner Mongolia, China was identified. The new species is characterized by these combined characters: body length of 1.03-1.27 mm; lip region distinctly offset; odontostyle 20-22 μm and 1.1-1.4 times the lip region diameter in length; odontophore 1.1-1.2 times the odontostyle length; basal expansion of pharynx occupying 42%-50.5% of the total neck length; genital system didelphic-amphidelphic; vulva transverse; vagina extending inwards 32%-43%; V value averaging more than 60; pars refringens vaginae with two trapezoidal sclerotizations and pars distalis vaginae weakly sclerotized; prerectum 72-107 μm long, 2.3-3.3 times the anal body diameter, and rectum 1-1.6 times the anal body diameter in length; tail conoid and bent ventrally, c' value 1.5-1.8 and males unknown. Phylogenetic analyses based on sequences of 18S small subunit rDNA and the D2-D3 expansion region of 28S rDNA are presented.
从中国内蒙古青海云杉根际土壤中提取出一个新物种，即青海云杉真矛线线虫（Eudorylaimus piceae n. sp.）。该新物种具有以下综合特征：体长1.03 - 1.27毫米；唇区明显缢缩；口针长20 - 22微米，长度为唇区直径的1.1 - 1.4倍；口针基部1.1 - 1.2倍于口针长度；咽基部膨大占颈部总长度的42% - 50.5%；生殖系统双雌型 - 双端型；阴门横向；阴道向内延伸32% - 43%；V值平均大于60；阴道折射部有两个梯形硬化，阴道远端部分弱硬化；直肠前区长72 - 107微米，为肛门处体径的2.3 - 3.3倍，直肠长度为肛门处体径的1 - 1.6倍；尾部呈圆锥形且腹向弯曲，c'值为1.5 - 1.8，雄性未知。文中还给出了基于18S小亚基核糖体DNA序列和28S核糖体DNA的D2 - D3扩展区的系统发育分析。
